499996309 has 2 divisors, whose sum is σ = 499996310. Its totient is φ = 499996308.

The previous prime is 499996307. The next prime is 499996313. The reversal of 499996309 is 903699994.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419840100 + 80156209 = 20490^2 + 8953^2 .

It is a cyclic number.

It is not a de Polignac number, because 499996309 - 2¹ = 499996307 is a prime.

Together with 499996307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (499996307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249998154 + 249998155.

It is an arithmetic number, because the mean of its divisors is an integer number (249998155).

Almost surely, 2^499996309 is an apocalyptic number.

It is an amenable number.

499996309 is a deficient number, since it is larger than the sum of its proper divisors (1).

499996309 is an equidigital number, since it uses as much as digits as its factorization.

499996309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4251528, while the sum is 58.

The square root of 499996309 is about 22360.5972415765. The cubic root of 499996309 is about 793.6985729469.

The spelling of 499996309 in words is "four hundred ninety-nine million, nine hundred ninety-six thousand, three hundred nine".